What absorbs at 3660 cm⁻¹ in an FTIR spectrum?
A band near 3660 cm⁻¹ can point to several functional groups. Below are the most likely assignments, ranked by how much published evidence supports each — every one traceable to literature (DOI) and cross-validated against our 130,000+ reference spectra and knowledge graph.
Backed by 5 cited sources
تعيينات المجموعات الوظيفية المحتملة
| مجموعة وظيفية | حقائق داعمة | المصادر المستشهد بها | أعلى ثقة |
|---|---|---|---|
| Hydroxyl (O-H) | 3 | 2 | 1,0 |
| Water (H2O) | 1 | 1 | 1,0 |
| Sulfate (SO4) | 1 | 1 | 1,0 |
| Silicon hydride | 1 | 1 | 1,0 |
يعكس الترتيب الأدلة الأدبية المتراكمة، وليس قاعدة واحدة موثوقة. تأكد دائمًا من سياق عينتك.
الأدبيات وراء هذه التعيينات
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Silicon hydride الثقة 1,0
“cm-1) cm-1) 3660 and Si-H peak (observed at 2160 417 (1997) relative to Si-O-Si peak as a function of film thickness.”
Bougharouat 等 - 2011 - Plasma polymerization of TEOS for QCM-based VOC va DOI: 10.1051/epjap/2011110144 -
Hydroxyl (O-H) الثقة 1,0
“O-H) 3440-cm-1 (bonded might be responsible for the O-H) 3660-cm-1 (unbonded bands and a 1:2 and the adductofwater-etheroxygensisresponsibleforthe3500H-O-H cm-1 3660-cm-1 (symmetric stretching) and the H-O-H (asymmetric stretching) bands.”
Maeda - 2001 - IR spectroscopic study on the hydration and the ph DOI: 10.1021/la001346q -
Hydroxyl (O-H) الثقة 1,0
“bands also move closer together, with the separation decreasing and two far less intense bands at 3660 and 3484cm(cid:3)1 97cm(cid:3)1 94cm(cid:3)1 from that can be attributed to the surface hydroxyl groups for well crystallized goethite to”
Spectroscopic characterization of iron ores formed in different geological environments using FTIR, XPS, Mössbauer spectroscopy and thermoanalyses DOI: 10.1016/j.saa.2014.10.090 -
Sulfate (SO4) الثقة 1,0
“Difference spectra 2of aqueous (a) (NH 4) cm-1 the only small weak negative peak around 3660 was SO 4, (b) Na 2SO 4, (c) MgSO 4, and (d) ZnSO solutions subtracted by 4 tentatively related to the effect of sulfate ions in the present pure wa”
Wei 等 - 2005 - Observation of the first hydration layer of isolat DOI: 10.1021/jp0453865 -
Water (H2O) الثقة 1,0
“25 26 cm-1 Since the increase of the band at 3660 cannot be attributed to water itself or to the increase of 27 28”
Acidic Properties of Alkaline-Earth Phosphates Determined by an Experimental-Theoretical Approach DOI: 10.1021/acs.jpcc.9b10472
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